CVE-2021-46520

7.8 highEPSS 0.7%

High (7.8) in cesanta mjs. EPSS 0.7% chance of exploitation in the next 30 days.

Cesanta MJS v2.20.0 was discovered to contain a heap buffer overflow via mjs_jprintf at src/mjs_util.c.

Severity

7.8 high

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-31)
CWE: CWE-787
Published: 2022-01-27
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19